package com.yang.utils;

import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class BlogUtil {
	public static List<String> getImgSrc(String htmlStr) {  
        String img = "";  
        Pattern p_image;  
        Matcher m_image;  
        List<String> pics = new ArrayList<String>();  
//       String regEx_img = "<img.*src=(.*?)[^>]*?>"; //图片链接地址  
        String regEx_img = "<img.*src\\s*=\\s*(.*?)[^>]*?>";  
        p_image = Pattern.compile(regEx_img, Pattern.CASE_INSENSITIVE);  
        m_image = p_image.matcher(htmlStr);  
        while (m_image.find()) {  
            img = img + "," + m_image.group();  
            // Matcher m =  
            // Pattern.compile("src=\"?(.*?)(\"|>|\\s+)").matcher(img); //匹配src  
            Matcher m = Pattern.compile("src\\s*=\\s*\"?(.*?)(\"|>|\\s+)").matcher(img);  
            while (m.find()) {  
                pics.add(m.group(1));  
            }  
        }  
        return pics;  
    } 
	
	public static String getTopImgSrc(String htmlStr) {  
        List<String> imgSrc = getImgSrc(htmlStr);
        if (imgSrc!=null&&imgSrc.size()>0) {
			return imgSrc.get(0);
		}
        return null;  
    } 
	
}
